Add a developer option button for marking every single room as read (#5582)

This will use an underlying SDK method and send a private read receipt plus a fully read marker in every single room the user is part of. It will most likely be a long operation that will get rate limited so the task is set to run detached for as long as it takes.

ElementX/Sources/Screens/Settings/DeveloperOptionsScreen/DeveloperOptionsScreenViewModel.swift

@@ -18,7 +18,10 @@ class DeveloperOptionsScreenViewModel: DeveloperOptionsScreenViewModelType, Deve
         actionsSubject.eraseToAnyPublisher()
     }
     
+    private let clientProxy: ClientProxyProtocol?
+    
     init(developerOptions: DeveloperOptionsProtocol, elementCallBaseURL: URL, appHooks: AppHooks, clientProxy: ClientProxyProtocol?) {
+        self.clientProxy = clientProxy
         super.init(initialViewState: .init(elementCallBaseURL: elementCallBaseURL,
                                            appHooks: appHooks,
                                            shouldShowClearCache: clientProxy != nil,
@@ -55,6 +58,10 @@ class DeveloperOptionsScreenViewModel: DeveloperOptionsScreenViewModelType, Deve
         switch viewAction {
         case .clearCache:
             actionsSubject.send(.clearCache)
+        case .markAllRoomsAsRead:
+            Task.detached {
+                await self.clientProxy?.markAllRoomsAsRead()
+            }
         }
     }
 }